LED lighting affected the growth and metabolism of eggplant and tomato transplants in a greenhouse

IF 1 Q3 HORTICULTURE

Horticultural Science Pub Date : 2020-09-30 DOI:10.17221/78/2019-hortsci

R. Wojciechowska, A. Kołton, Olga Długosz-Grochowska, E. Kunicki, Katarzyna Mrowiec, Paweł Bathelt

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引用次数: 8

Abstract

Light-emitting diodes (LEDs) were used for the spring greenhouse cultivation of eggplant (Solanum melongena L.) ‘Milar F1’ and tomato (S. lycopersicon L.) ‘Benito F1’ transplants. Seedlings were grown under natural light conditions with the supplemental LED light. A 16-h photoperiod provided plants with a DLI of 12.6 (eggplant) and 9.6 (tomato) mol m2/day. Four supplemental light spectra were tested: L1 (90% red + 10% blue); L2 (80% red + 20% blue); L3 (43% red + 42% blue+15% green) and L4 (56% red + 26% blue + 15% green + 3% UV-A). The PPFD in each LED light treatment was 150 ± 20 µmol/m2·s. Compared to the control plants (without LED lighting), the eggplant transplants had about a 25% larger leaf area and a higher level of total phenol content as well as a higher antiradical scavenging activity under the L1 spectrum. The favourable spectrum for the tomato transplants consisted of red to blue in a ratio of 1 : 1 mixed with a green light (L3) – the leaves were characterised by a higher content of dry matter, soluble sugars, photosynthetic pigments and total phenols; also the radical scavenging activity increased in comparison to the control group. It was shown that the supplemental irradiation of transplants was economically acceptable.

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LED照明影响温室中茄子和番茄移植的生长和代谢

发光二极管（LED）用于茄子（Solanum melongena L.）“Milar F1”和番茄（S.lycopersicon L.）“Benito F1”移植的春季温室栽培。幼苗在自然光照条件下生长，并补充了LED灯。16小时的光周期为植物提供了12.6（茄子）和9.6（番茄）mol m2/天的DLI。测试了四个补充光谱：L1（90%红色+10%蓝色）；L2（80%红色+20%蓝色）；L3（43%红+42%蓝+15%绿）和L4（56%红+26%蓝+15%绿色+3%UV-A）。每个LED光处理的PPFD为150±20µmol/m2·s。与对照植物（没有LED照明）相比，茄子移植的叶面积大了约25%，总酚含量水平更高，在L1光谱下具有更高的抗自由基清除活性。番茄移植的有利光谱由1:1的红色和蓝色与绿光（L3）混合组成——叶片的特征是干物质、可溶性糖、光合色素和总酚含量较高；与对照组相比，自由基清除活性也增加。研究表明，移植的补充照射在经济上是可以接受的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Horticultural Science Horticulture-园艺

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal publishes results of basic and applied research from all areas of horticulture, fruit-growing, vegetable-growing, wine-making and viticulture, floriculture, ornamental gardening, garden and landscape architecture, concerning plants that are grown under the conditions of European temperate zone, or field plants that are considered as horticultural cultures. Original scientific papers, short communications and review articles are published in the journal. Papers are published in English (British spelling).